If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Take one out and scratch my head, I am now black but once was red. What am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.